A backlink is a link from a page on another website to your website. For example, if an industry blog links to your guide in its content, that link counts as a backlink.

Backlinks let users move between different websites. Search engines can also use links to discover new pages and understand relationships between content on the web.

But not every backlink is good or useful. The credibility of the linking site, the topical relationship, the nature of the content and the purpose for which the link was created all matter.

Backlinks can:

  • Help new users discover your site.
  • Create referral traffic.
  • Support the brand’s recognition in its industry.
  • Help search engines find new pages.
  • Lead to your content being used as a source.
  • Support digital reputation and authority.

Why Are Backlinks Important for SEO?

Search engines can use links to understand how pages relate to each other. Natural links from trustworthy, relevant sources can show that content is seen as a valuable source.

But trying only to increase the number of links is not right. From an SEO point of view these factors are evaluated: the topical relationship of the linking site, its credibility, the content the link sits in, the anchor text, the linked page, whether the link is natural and whether it is an ad or sponsorship. Backlink work should run within a comprehensive off-page SEO strategy.

  • Editorial backlink: A publisher links to your content naturally because they find it useful, for example citing a statistic from your site in a research article.
  • Promotional article backlink: A link inside a piece about the brand or service. The article should be prepared to offer the reader useful information, not just to place a link.
  • Business directory link: Links from profiles created on trustworthy industry directories. Choose platforms with a real audience rather than registering everywhere automatically.
  • Social media links: Links in social profiles and posts. They are not treated like classic editorial backlinks but can bring traffic and brand awareness.
  • Image backlink: Another site uses your infographic, photo or chart and links to the source. See the what is an infographic guide.
  • Local backlink: Links from local news, chambers of commerce, events or regional sites. Local businesses can run this together with a local SEO strategy.

In everyday SEO terms, links are often called dofollow and nofollow.

  • Dofollow link: Standard links may carry no special rel attribute. Search engines can crawl this link normally.
  • Nofollow link: The rel="nofollow" attribute lets the publisher give a special signal about the link. Nofollow links should not be seen as worthless; they can give user traffic, brand awareness and discovery.
  • Sponsored link: rel="sponsored" can be used for ad, sponsorship or paid collaboration links.
  • UGC link: rel="ugc" can be used in forum comments and user-generated content.

For HTML link attributes, see the HTML rel article.

What Is Anchor Text?

Anchor text is the clickable text of a link. For example, when the phrase “SEO consulting” links to a page, it is the anchor text. Types include brand name, naked URL, exact-match keyword, partial-match keyword, page title and generic phrases.

A link profile made up constantly of the same commercial keyword may not look natural. Use brand, URL and different descriptive phrases in a balanced way. For details, see the anchor text guide.

A quality backlink generally:

  • Comes from a topically related site.
  • Sits in a trustworthy publication.
  • Offers the user extra information.
  • Is placed in a meaningful text.
  • Can generate real referral traffic.
  • Avoids artificial anchor text repetition.
  • Is not created to manipulate rankings.

High traffic or a high score in a third-party tool alone does not show that a link is good.

  • Produce quality content. Creating content worth linking to is one of the most sustainable methods: comprehensive guides, original research, statistics, industry reports, checklists, tools, comparisons, infographics and case studies. A content marketing strategy helps this content gain visibility.
  • Do digital PR. If company news, research, events and industry developments are newsworthy, offer them to digital publications. The aim is not just to get a link but for the brand to appear in trustworthy sources.
  • Write guest posts. Prepare original and useful content on sites related to your industry: choose a topic that fits the audience, do not use duplicate content, do not add excessive links, show the author’s expertise and offer real value.
  • Track brand mentions. Your brand may be mentioned online without a link; you can contact suitable publications and ask for a link.
  • Find broken links. Spot dead source links on other sites and suggest your current, relevant content as an alternative.
  • Use partnerships. Suppliers, solution partners, dealers and professional bodies can link to your business within real business relationships. Avoid pages created for excessive reciprocal link exchange.

Not every paid publication is automatically harmful. Advertising, sponsorship and promotional work are part of digital marketing. The risk arises when a link’s main purpose is to manipulate search rankings artificially.

These practices can create risk: bulk backlink packages, link networks, hidden links, adding links to hacked sites, getting hundreds of links from irrelevant sites, always using the same anchor text, automated directory submissions and duplicate promotional articles. Backlink work should aim at brand authority and real user traffic rather than short-term ranking moves.

A harmful backlink is a link from a low-quality, manipulative or spam source that could create risk in the link profile. Examples: auto-generated pages, irrelevant foreign sites, adult or illegal content sites, hacked pages, repeated site-wide links and keyword-focused link networks.

But a link you do not recognize should not be assumed harmful; search engines can ignore many low-quality links themselves. See also the spam link and anti SEO articles.

In a backlink analysis, evaluate: the linking domains, new and lost links, anchor text distribution, the pages being linked, the dofollow, nofollow and sponsored split, topical relevance, suspicious links and competitors’ link sources.

You can use Search Console and professional SEO tools. Google Search Console offers basic information about links to your site. For competitor and link analysis, see the Semrush guide. For a step-by-step approach, see how to do a backlink analysis.

When Should the Disavow Tool Be Used?

Disavowing links should not be applied every time you see a low-quality link. It should be considered with expert evaluation in serious situations such as a manual action risk, heavy manipulative link work in the past or large uncontrolled link networks. Wrong use can neutralize useful links.

A backlink comes from another domain to your site. An internal link is made between two pages on the same site. Internal links strengthen the site hierarchy, help users reach related pages, prevent orphan pages and show topic relationships. For the general structure of links, see the what is a hyperlink article.

  • Focusing only on the number of backlinks
  • Getting links from irrelevant sites
  • Always using the same anchor text
  • Publishing duplicate promotional articles
  • Creating hundreds of links in a very short time
  • Getting links only to the home page
  • Ignoring on-page and technical SEO problems
  • Treating third-party metrics as a firm quality indicator
  • Disavowing every link that looks harmful

Frequently Asked Questions

There is no ideal number for all sites. The quality, naturalness and topical relevance of links matter more than the total.

Nofollow links can give user traffic, brand awareness and discovery. Focusing only on dofollow links is not right.

Technically they are links, but they are not treated like editorial website backlinks. They can provide traffic and brand visibility.

It varies with how the link is discovered, the site’s state and the level of competition. Not every link should be expected to produce a measurable ranking effect.

If there is a real user need and topical relationship, yes. Avoid wide link networks created only to manipulate rankings.

Conclusion

A backlink is a link from another website to yours. Quality backlinks can support referral traffic, brand awareness and organic visibility work.

In a successful backlink strategy: prepare content useful to users, target trustworthy and relevant publications, keep the anchor text distribution natural, label advertising and sponsorship links properly, analyze harmful links carefully and support backlink work with on-page and technical SEO.

For professional management of backlink and brand authority work, you can use off-page SEO optimization, our SEO consulting service and, for ready comprehensive work, our backlink packages.